Re: [PATCH][BZ #16037] configure: allow building with GNU Make 4

[Allan McRae <allan at archlinux dot org>]

On 10/10/13 22:24, Thomas Schwinge wrote:
> Hi!
> 
> On Thu, 10 Oct 2013 09:47:47 +0200, Andreas Jaeger <aj@suse.com> wrote:
>> On 10/10/2013 07:26 AM, Marc-Antoine Perennou wrote:
>>> Currently, configure errors telling make 4 is too old
>>> since it does not match our regexp.
>>
>> Does glibc build correctly with make 4?
> 
> For such things, I suggest Âbuild correctly to mean: the output produced
> by building, installing, and testing it is identicaly to before, or any
> differences can be explained.
> 
> And, I suggest that Âoutput produced both includes the direct build
> artifacts (.o files, and so on), and also the stdout/stderr log of the
> build (for this, of course, it makes sense to use make -j1).


I have attached a diff of build logs with make-3.82 and make-4.0.

The main "differences" are that make-3 uses a ` in its output whereas
make-4 uses a '.  Make-4 also does not print entering/leaving notices
when it does nothing in that directory.  I have filtered most of these
out, but you will see examples of the latter in the attached output.

The first difference is a rebuilding of C-translit.h.  I believe that
this should not happen...

The second real differences involves librtld.mk.  I have no idea what
this is, so someone else will need to comment on that.

Finally, there are a couple of small differences at the end where gcc is
called.  I build glibc with "build-programs=no" first, then add
hardening cflags to build the binaries.  It looks like make-3 is doing
some unnecessary work in the second make call that make-4 is not doing.

Allan

Attachment: glibc-make-differences.txt
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